Crash on monitor wake-up in v18.20.2.15

I'm having an issue that sounds similar to one from back in January, but under Linux rather than Windows. I upgraded to amdgpu v18.20.2.15, and started seeing that sometimes the display wouldn't come back from a wake from display-off. The machine keeps running, and I'm able to ssh into it (see dmesg snippet below) but it seems to need a reboot for the display to come back.